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DTO interrupt can be later than transmit interrupt(IDMAC) in case of write. Current handling of IDMAC interrupt sets EVENT_DATA_COMPLETE as well as EVENT_XFER_COMPLETE regardless of DTO rising. This makes the current request finish in tasklet and permits the next request even though current data transfer is still in progress. As a result, sequence is broken and lock-up happens. Setting EVENT_DATA_COMPLETE is not proper after IDMAC interrupt. It should be taken after DTO interrupt is generated. Reported-by: Dmitry Shmidt <dimitrysh@android.com> Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Hyeonsu Kim <hyeonsu.kim@samsung.com> Acked-by: Will Newton <will.newton@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org> |
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